InstantForum.NET v4.1.4Programming Help Forumshttp://www.programminghelp.com/forums/forums@programminghelp.comFri, 18 May 2012 08:47:07 GMT20http://www.programminghelp.com/forums/Topic5177-18-1.aspxYou could setup a javascript change event listener on the combo box. When this event is triggered, you would then set the third combo box to visible and load it up with the content you want.<br><br>If you don't already, I would recommend using a javascript library like [url=http://jquery.com/]jQuery[/url] or [url=http://www.extjs.com/]ExtJS[/url]. It will take away a lot of the headache.<br><br>If you need anymore help, with anything, feel free to email me at t@thintz.com.Sat, 05 Jun 2010 00:03:55 GMTThomasHintzhttp://www.programminghelp.com/forums/Topic5177-18-1.aspxHi,<br><br>I have two combo boxes in which when the user selects certain items in both combo boxes, it determines whether I display a third combo box. <br><br>E.g.<br><br>If the user selects Yes to the first combo box which states ' Do you own a pet?' and the user selects Dog from the second combo box which states ' What pet do you own?' . A third combo box will appear stating 'Please choose breed?' with a list of dog breeds.<br><br>Can you give me any ideas how best to do this?<br><br>Tue, 30 Mar 2010 09:00:51 GMTprogrammer